I have a PS2 and i have these titles: Prince of persia: Sands of time,Warrior within and The 2 thrones,Jak 3,GT4,Resident Evil 4,Fifa 07,Final fantasy X,God of War,Burnout Revenge
My best of the lot will be
1.Final Fantasy X
2.Resident Evil 4
3.God of War

Well of the listed consoles I only have the now obsolete Xbox and ps2 however i feel fully equipped to answer the question as it was worded "in my collection" so this is very easy. Elder scrolls 3 Morrowind for the Xbox has used up more hours of my life than sleep has mostly due to the limitless possibilities for quests and upgrades (im a sucker for maxing out my characters like if i just get my enchant skill to 99 then that will mean the end of world hunger or something). For ps2 its a little more difficult as all th FF games are released on that console so now its like you're asking me to make a choice between food or water. But if I HAD to choose i believe FF X would be my favorite (long boring soliloquies aside) the gameplay is incredible the sound and FMV's even more so and I just love any game that demands an original score. Now as for the third I believe it would have to be Star Wars Battlefront 2 as it meets two requirements that i have been unable to find in any other game 1.It allows me to indulge my inner geek with F'ing STAR WARS! and 2. My freaking wife is able to play it with me and shes, how do i put this politely? gametarded. yes, gametarded thats a good word for it and so we come to then end of my self indulgent ramblings and what have we accomplished? Absolutely nothing , but then again thats sort of the point of video games isn't it?
-Wow, I knew my husband could run away with that one, and he's right, I am kinda gametarded. My favorite ps2 game is piglet's Big Game, and Star Wars Battlefront 2.